<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <meta
      name="viewport"
      content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"
    />

    <title>上下滚动的数字时钟</title>
    <link rel="stylesheet" href="index.css" />

    <link rel="icon" type="image/x-icon" href="../../../favicon.ico" />
</head>

  <body>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
    </div>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
      <div class="num">3</div>
      <div class="num">4</div>
      <div class="num">5</div>
      <div class="num">6</div>
      <div class="num">7</div>
      <div class="num">8</div>
      <div class="num">9</div>
    </div>
    <div class="colon"></div>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
      <div class="num">3</div>
      <div class="num">4</div>
      <div class="num">5</div>
    </div>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
      <div class="num">3</div>
      <div class="num">4</div>
      <div class="num">5</div>
      <div class="num">6</div>
      <div class="num">7</div>
      <div class="num">8</div>
      <div class="num">9</div>
    </div>
    <div class="colon"></div>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
      <div class="num">3</div>
      <div class="num">4</div>
      <div class="num">5</div>
    </div>
    <div class="column">
      <div class="num">0</div>
      <div class="num">1</div>
      <div class="num">2</div>
      <div class="num">3</div>
      <div class="num">4</div>
      <div class="num">5</div>
      <div class="num">6</div>
      <div class="num">7</div>
      <div class="num">8</div>
      <div class="num">9</div>
    </div>

    <script src="index.js"></script>
  </body>
</html>
